Nexgen Mediatech Inc.
NO
VER. A1
TITLE
Level 1 Service Manual
PAGE
27/30
10.Defect code, Possible Cause and Changed Parts summary
Items Defect mode
Code Possible Cause and Changed Parts
1
No power
F1 Power cord/adaptor, power supply, Keypad board, main board
2
No picture
F2 Is on power saving mode? Each input signal is abnormal?
3
Missing line
F3 Main board, panel, panel-MB cable
4
Bright/dark dot
F4 Main board, panel, within dot spec
5
Abnormal Display
F5 Frequency of input signal is normal, main board, Tuner
6
R. G. B display abnormal
F6 Adjust Hue/Tint
7
Polarizer defect
F7 Panel surface has scratch, crack or any surface defect?
8
Picture is too dark
F8 Adjust brightness or contrast, inverter failure
9
Audio Abnormal
F9 Speaker, audio cable, Tuner
10 Audio/Video not clear
F10 Signal frequency, fine tune RF frequency, tuner
11
Only sound, no picture
F11 Signal frequency, fine tune channel frequency, tuner
12
Only picture, no sound
F12 Signal frequency, fine tune channel frequency, tuner, speaker,
audio cable
13
Cannot use remote control
F13 Battery, control angle smaller than 30 degree and 5 meter away
from the destination
14 Display Shut Down
F14 Power supplier, keypad board, main board
15
No picture
F15 Adjust hue/tint, main board
16 No TV picture or picture is
unclear
F16 TV cable, RF signal frequency, the direction of
antenna, main board
17 Flicker
F17 Input signal not stable, inverter, main board
18 TV No Teletext ( PAL ,
SECAM )
F18 TV module, main board, firmware
19 NTSC
SAP/MTS
failure
F19 Tuner, main board, firmware
20 Appearance and
mechanism
F20
21 Others
F21 Please attach electronic picture and explain
27
